Printing gtlindee



(N0 Model.)

E. HAAS.

PRINTING CYLINDER.

No. 278,937. Patented June 5,1883.

FNM.

WTNE''SSE'" A INVENTH f n Panis pmbumgapmn wmsnmgmnv D4 cA UNITED STATES PATENT OFFICE.

EDWIN HAAs, on PHILADELPHIA, rEN'NsYLvANIA.

pmNTlNc-cvLmnEn.

SPECIFICATION forming part of Letters Patent No.2'78,937, dated June 5, 1883. Application tiled April 4, 1883. (No model.)

To all whom it may concern:

Be it known that I, EDWIN HAAS, a citizen of the United States, residing in Philadelphia, Pennsylvania, have invented certain Improvements in Printing-Cylinders, of which the following is a specification.

rlhe object of my invention is to construct a cheap cylinder for wall-paper printing 5 and this object I attain in the manner which I will now proceed to describe, reference being had to the accompanying drawings, in which- Figure l is a view, partly in section, of my improved printing-cylinder, Fig. 2, a transverse section, showing the method of manu,- facturing the cylinder, and Fig. 3, a sectional view of a modified form of cylinder.

The cylinder shown in Fig. l comprises the opposite ends or heads, A A,a cylindrical shell, B, preferably of sheet metal,a wire-gauze covering, D, on the latter, and an outer coating,

F, of type-metal, the face of which is flush with the peripheries ofthe heads A A.

The ends of the cylindrical shell B are let into annular grooves a onthe inner sides of the headsA, and the gauze covering D is, for convenience, applied to the shell B before the latter is adjusted to the heads, the said shell, with its gauze covering, being preferably galvanized.

The outer coating, F, of type-metal, is applied. in the manner shown in Fig. 2.

The heads A, arranged at the proper distance apart, are secured to hollow spindles, the latter being adapted to suitable bearings, and a fixed cylindrical casing, G, which fits snugly to the peripheries of the heads A, is adjusted to the latter.

A bar, d, is secured to the surface of the shell B, and extends from one head to the other.

The shell is in the first instance so adjusted.

that the bar shall be at a point close to an opening, e, in the vcasing G, and melted type-metal is then poured through said opening, the metal nding a lodgment against the said bar cl, which, as the introduction of the melted metal progresses, is moved farther and farther away from the opening by slowly turning the cylinder in the direction of the arrow. rlhe melted metal thus gradually fills the space between Vthe shell B and outer casing, G, and when this space has been completely lled the cylinder may be removed from the casing, the bar d detached, and the recess left by the removal of the bar filled by soldering or other wise.

To prevent the too sudden chilling of the metal when it comes in contact with the shell of the cylinder, and to insure a firm union of the type-metal coating with the gauze and shell, I heat the latter from the inside, at the point where the metal is poured, and at other points, if desired, the means adopted in the present case for this purpose being a Bunsen burner comprising a gas -'pipe, f, and surrounding air-pipe g, introduced through the tubular spindles ofthe cylinder. A.

Vhen the cylindrical gauzecovered shell has been provided with the type-metal coat ing the surface of the latter is turned off or otherwise trued, and a pattern is marked thereon, a white composition being by preference first applied to the cylinder to permit a proper display of the design. coating are then removed by means of a suitable routing-tool, so as to leave the pattern in relief.

The cylinder maybe made as shown in Fig. 3, in which a cylindrical shell having -flanges w w is secured to pulleys or spiders H H,wiregauze D being wrapped round the cylinder between the flanges,and type-metal or equivalent alloy being applied to the gauze in the manner described above, or in any other manner which may be found most convenient, for it should be understood that I do not claim or restrict myself to any specic mode of applying the type-metal, the plan described above, however, being that which I prefer.

I claim as my invention- A printing-cylinder in which are combined the following elements, namely: a cylindrical shell, B, wire-gauze covering D, applied to the same, and type-metal coating F, allsubstantially as set forth.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

HARRY L. ASHENFEL'IER, HENRY HowsoN, J r.

Portions of the metalv 

